ASTROSAT CZTI

Data Quality Report

Orbit 30802

Creation date: 2024-06-27T20:19:47.576380
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_071T25_9000004450_30802cztM0_level2.evt modeM0/AS1A10_071T25_9000004450_30802cztM0_level2_quad_clean.evt
Size (bytes)575,539,20074,557,440
Size548.9 MB 71.1 MB
Events in quadrant A3,405,028474,492
Events in quadrant B5,658,357475,544
Events in quadrant C3,935,992435,130
Events in quadrant D4,006,577434,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137282
B0207162
C0158442
D0160132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6274330.525980%
B62742674.255658%
C62731572.502790%
D6273410.653595%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7589 6274 0 0 0.00% 0.00%
B 7589 6274 135 135 1.78% 2.15%
C 7588 6273 39 39 0.51% 0.62%
D 7588 6273 29 29 0.38% 0.46%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 11521 61.55 882 871 173.0
A 3 137 8060 41.55 882 871 173.0
A 0 226 7416 37.82 882 871 173.0
B 6 159 1720685 10441.33 871 854 164.7
B 5 255 467889 2835.43 871 854 164.7
B 12 111 19128 110.94 871 854 164.7
C 3 233 418655 2205.75 820 829 189.4
C 0 10 158266 831.13 820 829 189.4
C 14 238 136288 715.1 820 829 189.4
D 8 195 808296 4012.08 824 806 201.3
D 2 250 33433 162.11 824 806 201.3
D 2 234 27284 131.56 824 806 201.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter